K2-140 b was first characterized using photometry from the K2 mission [1]}, a re-purposed extension of the Kepler mission [2]}, after two of its reaction wheels failed. [3]} used radial velocity (RV) observations from CORALIE [4]} and the High Accuracy Radial velocity Planet Searcher [5]} to confirm the planetary nature of K2-140 b and to constrain its physical and orbital properties.
